Cultivator.



E. H. COLGAN.

GULTIVATOR.

APPLICATION FILED MAR.21, 1912.

1,044,497, v Patented Nov. 19, 1912.

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E. H. COLGAN.

GULTIVATOR.

APPLICATION FILED MAR. 21. 1912. 1,044,497. Patented Nov. 19,1912.

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EDWVARD E. COLGAN, OF LITTLE ROCK, ARKANSAS.

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Specification of Letters Patent.

vl)atentfed Nov. t9, i912,

Application filed March 21, 1912. Serial No. 685,253.

To all toi/'tom it may concern.'

Be it knovvn that l, EDWARD H. COLGAN, a citizen of the United States,residing at Little Reek, county of Pulaski, and State of Arkansas, haveinvented certain ne7 and useful improvements in Cultivato-rs, of whichthe following is a specification.

This invention relates to eult-ivators.

The objectI of the present invention is the provision of an adjustableeultlvator of improved. construction in which the shovel carrying beamsare pivoted and may be adjusted angularly in any desired manner inrelation to each other and used separately; wherein the shovels may beraised or lowered, turned to different angles, reversed; wherein theeultivator standards are arranged and constructed for reversal so thatthey may be used either for cultivating or for harrowing purposes; andin Which there vvill be provided a special center' shovel adjustable ina circle to dispose it at any desired position' or angle in relation tothe other shovels and which may also be used as a ha "row,

,ln carrying out the invention, there is provided, flrst, an improvedstandard and fastening for securing a shovel to a eultivator beam;second, a new adjustable shovel shank; third, a novel reversiblecombined Shovel and barrow; fourth, a novel rotatably mounted shovel orharroW standard. which can be swung around laterally to any desiredposition, together with the means for securing it; fifth, cultivatorbeams removably, pivotally connected together and capable of independentor conjoint use; sixth, one or more swinging eultivator beams andimproved means, including a frame, a spring, and a clamp, for securingit or them in different positions; further, in certain features ofconstruction and novel arrangements and combinations of parts more fullyset forth hereinafter.

rThe invention, in its diiferent aspects, is recited in the appendedclaims.

ln the accompanying drawingszwlligure l is a plan view, dotted linesrepresenting one et the eultivator beams swung back;

Fig. 2, a side elevation; Fig. 3, a bottom plan of the eultivator withmost of the standards and shovels removed; e, a detail section showingthe means for securing and pivoting the eultivator beams and forclampingthe center shovel and its standard; Fig. 5, a detail elevationpartly in section, showing one of the standards, the reversible stem,and the fastening devices; Fig. 6, a section on line 6 6, Fig. 5; Fig.7, a detail of the plate against Which the eenter standard is clamped;and lt1 ig. 8, a de tail, partly broken away, of one of the clampingscrews for a cultivator shovel stein.

The draft beam l may have. any suitable handle 2 and any desired meansby which it may be drawn by draft animals or other- Wise.

Secured by bolts 3, or in any other preferred manner, to the draft beaml circular frame 4l of angle-iron which has a depending llange 5provided with notches 6.

Stink into the bottom side of the draft beam l, if the latter is ofwood, or constituting a part thereof if of metal, is a locking plateI 7provided with ridges 8, preferably arranged in general radial relation,and the center pivotal and clamping bolt 9, which latter has a handlescrew clamp nut l0 and serves to pivotally connect together' aud to thedraft beam, the eultivatt'ir beams ll and l2 which are formed of angleiron and eX- tend beyond the frame ll. They are adapted to lit in thenotches 6 and thus the strain is distributed between the frame 4lY andthe draft beam l. Extending through the herizontal portions of theeultivator beams are clamping screws 13 which also pass through clamps14 that overlie the frame 4 and are provided with hooks l5 engaging it.Clamping nuts, preferably 'provided With handles, 16, serve to clamp theeultivator beams to the frame so that when these beams are inthe notchesthey are secured against displacement. Coil springs 17 surround thebolts 13 and exerta pressure both on the clamps and the cultivatorbeams, in consequence of Which when the clamping nuts are loosenedpreparatory to disengaging the beams from the frame 1, the springs, ineach instance, tend to force the beams downwardly and disengage themfrom the notches in frame il, thus facilitating the release of thecultivator beams from the frame.

The center standard 1S is of fiat, springy metal and provided with abifurcated part 19 which straddles the clamping bolt 9 and is disposedbetween the plate 7 and the cultivator beams. The ridges 8 cooperatewith the bifurcated end 19 and, together with the clamping action of thebolt 9, hold the spring standard 18 firmly clamped in the position towhich it is adjusted. This center standard 1S is thus made adjustable ina complete circle to any desired position that it may be disposed eitherforwardly or rearwardly of the other cultivator standard and, with theaxial adjustment o-f the cultivator shanks, as will presently7 appear,any desired relative positioning of the shovels may be effected.

The cultivator shovel stem 20, which is cylindrical, passes through around hole 21 in a head 22 and is held by a clamping screw 23 in anyposition to which it may be adjusted vertically or to which it may beturned. The head has a plate 24 adapted to bear against the standard 18,a flange 25 having a slot receiving the end part of the standard 18. Abolt and nut 26 passes through the base of the head and through thestandard. Thus, by a single bolt fastening, 1 am able to securelyconnect the head and ends of the cultivator shank to the standard, withcapacit-y for quick, easy removal, any desired adjustment of thecultivator stem.

The attachment of all of the cultivator shovels and stems to theirspring standards 27 is effected by the same construction as that justdescribed. The spring standards 27 of the remaining cultivator shovelsoverlie the horizontal parts of the cultivator beams and are providedwith hooked ends 28 which engage the heads thereof, Bolts 29 passthrough the overlying parts of the spring standards 27 and through thehorizontal parts of the cultivator beams and are provided with nuts 30which are locked in position by having one edge engage the vertical webof the cultivator beams and the other edge the hooked end 28. Thus, witha single bolt, the cultivator standards are secured to their beams,adapted for easy detachment, and the strain is largely re- .moved fromthem.

Reversible or double cultivator shovels 31 are connected to the lowerends of the stems by bolts and nuts 82. Then one point becomes dull, theshovels may be reversed and the other point used.

The stems may be provided on their upper ends with points or teeth 33 sothat, on reversal of the stems7 the machine may be used as a harrowinstead of as a cultivater.

The cultivator beams may be adjusted to any desired angles in relationto each other and locked to the frame 1. The center standard and itsshovel may be adjusted laterally in a. complete circle to any desiredposition, either in line with or backwardly or forwardly of theremaining shovels, and similarly, if the stems are reversed and themachine used as a harrow, the same effects may be obtained. One of thecultivator beams may be removed and the machine operated with theremaining beam only.

Having thus described my invention, what 1 claim as new and desire tosecure by Letters Patent, is

1. 1n a cultivator or harrow, the combination with a frame havingarc-shaped parts provided with notches, of pivoted beams carryingearth-treating devices adapted to engage the notches, clamping devicesadapted to coperate with the beams and the frame to hold the beams inthe notches, and springs tending to disengage the beams from thenotches.

2. 1n a cultivator or harrow, the combination with a frame havingarc-shaped parts provided with notches, of pivoted beams carryingearth-treating devices adapted to engage the notches, clamp platesbearing on the frame and provided with hooked ends engaging said frame,clamping bolts connect-ing the clamp plates with the beams and adaptedto hold the beams in ,the notches, and coil springs surrounding saidclamp bolts and tending to disengage the beams from the notches.

3. 1n a cultivator or harrow, the combination with the frame thereof, ofa pivoted swinging beam carrying earth-engaging devices, a pivotalclamping bolt for connecting said beam to said frame, and a bifurcatedstandard carrying an earth-engaging device and having its bifurcatedpart straddling` the bolt and clamped by the bolt. said standard beingadjustable independently of the beam and independently of theearthengaging devices carried by said beam.

it. 1n a cultivator or harrow the combination with a frame, of alaterally swinging beam carried thereby, cultivating devices carried bythe beam, a circularly adjustable standard carrying an earth-engagingdevice and provided with a pivoted part disposed substantially centrallyof the frame, a plate having ribs or ridges adapted to engage saidstandard, and a clamping bolt passing through the bifurcation of thestandard and through the plate.

5. 1n a cultivator or harrow, the combination with a beam which incross-sectional shape has its parts disposed at an angle to l beam,whereby the nut is prevented from each other, of a standard extendingcrossloosening. Wise of the beam and provided with a In testimonywhereof, I hereunto aHiX my hooked part engaging one edge thereof, asignature in presence of two Witnesses. bolt. passing through thestandard and\ EDWARD H. COLGAN. through the beam, and a nut on the boltWitnesses:

which s disposed between and engaged by R. E. VILEY,

the hooked end and the other part of the JNO. F. CLIFFORD.

iopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

